AngularJS ng-hide用法及代码示例

AngluarJS中的ng-hide指令用于显示或隐藏指定的HTML元素。如果ng-hide属性中给出的表达式为true，则HTML元素将隐藏。在AngularJS中，有一个名为ng-hide的预定义类，该类用于将显示设置为无。

用法:

 <element ng-hide="expression"> Contents... </element>

范例1：本示例使用ng-hide指令显示输入的数字是否为5的倍数。

<!DOCTYPE html> 
<html> 
      
<head> 
    <title>ng-focus Directive</title> 
  
    <script src= 
"https://ajax.googleapis.com/ajax/libs/angularjs/1.6.9/angular.min.js"> 
    </script> 
</head> 
  
<body ng-app="app" style="text-align:center"> 
    <div ng-controller="geek" ng-init="val=0"> 
          
        <h1 style="color:green">GeeksforGeeks</h1> 
          
        <h2>ng-click Directive</h2> 
          
        Enter a number:<input type="text" ng-model="val" 
                ng-keyup="check(val)"> 
   
        <div ng-hide="hide"> 
            <h3> 
                The number is multiple of 5 
            </h3> 
        </div> 
          
        <div ng-show="hide"> 
            <h3> 
                The number is not a multiple of 5 
            </h3> 
        </div> 
    </div> 
      
    <script> 
        var app = angular.module("app", []); 
        app.controller('geek', ['$scope', function ($scope) { 
            $scope.check = function (val) { 
            $scope.hide = val % 5 == 0 ? false:true; 
            }; 
        }]); 
    </script> 
</body> 
  
</html>

输出：
nghide

范例2：本示例使用ng-hide指令隐藏内容。

<!DOCTYPE html> 
<html> 
    <script src="https://ajax.googleapis.com/ajax/libs/angularjs/ 
    1.6.9/angular.min.js"></script> 
    <head> 
        <title>ng-hide Directive</title> 
    </head> 
    <body> 
        <div ng-app="app" ng-controller="geek"  style="text-align:center"> 
            <h1 style="color:green">GeeksforGeeks</h1> 
            <h2>ng-hide Directive</h2> 
            <input id="chbhide" type="checkbox" ng-model="hide" /> 
            <label for="chbhide"> 
                Hide Paragraph 
            </label> 
            <p ng-hide="hide" style="background:green; color:white;  
            font-size:14px; width:35%; padding:10px;"> 
                Hide this paragraph using ng-hide 
            </p> 
        </div> 
        <script> 
            var myapp = angular.module("app", []); 
            myapp.controller("geek", function ($scope) { 
            $scope.hide = false; 
            }); 
        </script> 
    </body> 
</html>

输出：
点击之前：
nghide
单击后：
nghide

相关用法

注：本文由纯净天空筛选整理自Vishal Chaudhary 2大神的英文原创作品 AngularJS | ng-hide Directive。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。